525 EFI factory spark plugs

Reply Subscribe

Thread Tools

09-01-2009 | 05:19 AM

SeaDated

Thread Starter

Registered

Joined: Mar 2001

Posts: 854

Likes: 0

From: Kennesaw, GA, USA

525 EFI factory spark plugs

Does anyone know which NGK plug is installed by the factory? Also has anyone found a better plug, mine load up at idle? Thanks

09-01-2009 | 08:58 AM

outriggers

Registered

Joined: Nov 2003

Posts: 946

Likes: 1

From: Clinton N.J.

I have a 525 but it has NGK's in it. I remember asking a Merc rep if there was a better plug than a NGK for my Merc 2.5 outboard? He said, Not if you want it to run.

Doug

09-01-2009 | 11:53 AM

25 hors la loi

Registered

Joined: May 2002

Posts: 860

Likes: 0

From: North of the Border

On the engine the sticker they say BPR6ES , mine run BPR5ES , i know the the 5 and 6 mean hotter or cooler , when i bought the boat he come with it ....never a problem so far
Christian